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Cushion|Lab Grown|IGI

1.46ct E IF Cushion Lab Grown Diamond

VG • E/IF • IGI LG816615278

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG816615278

Diamond specifications and retailer prices

From £257 GBP
$344 USD
As of October 25, 2026
Save £1,281 GBP (83%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: £1,537 GBP at Brilliant Earth · As of October 29, 2026
View at Brilliant Earth

About this 1.46ct lab-grown cushion diamond

This 1.46ct lab-grown cushion sits in the one-and-a-quarter to one-and-a-half carat band, graded E colour (colourless) and IF clarity (flawless or internally-flawless), with a very-good cut grade and certified by IGI LG816615278 or 816615278. Listed at 17 retailers as of October 25, 2026, with prices from £257 to £1,537, a £1,281 spread on the same certified stone. Brilliant Earth lists it at £1,537. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.46
Carat
E
Colour
IF
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.1°
Pavilion angle33.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG816615278
Dimensions8.59 × 5.61 × 3.76 mm
L/W Ratio1.53
Girdle conditionFaceted
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
8.59 mm5.61 mm1.46 ctE / IF
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG816615278
Side View
Table 58.0%Crown 35.1°Girdle: MED-THKPavilion 33.1°Culet: NoneDepth 67.0%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 25
Current: £1,537 GBP|Low: £257 GBP|High: £1,590 GBP|Avg: £642 GBP|-3.3%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
October 30, 2026
Retailer 4£257 GBP
Retailer 2£272 GBP
Retailer 3£287 GBP
Retailer 16£388 GBP
Retailer 10£416 GBP
Retailer 5£424 GBP
Retailer 13£441 GBP
Retailer 7£450 GBP
Retailer 9£452 GBP
Retailer 12£625 GBP
Retailer 15£654 GBP
Retailer 6£826 GBP
Retailer 8£863 GBP
Retailer 11£1,034 GBP
Retailer 14£1,317 GBP
Brilliant Earth£1,537 GBP

34 data points across 16 retailers

17 retailers£257 GBP to £1,537 GBP

A
Cheapest Retailer
-
£257 GBP
$344 USD
A
Retailer 2
-
£272 GBP
View
A
Retailer 3
-
£287 GBP
$385 USD
View
Final sale: no returns
A
Retailer 4
-
£388 GBP
$520 USD
View
A
Retailer 5
-
£416 GBP
€531 EUR
View
A
Retailer 6
-
£424 GBP
$568 USD
View
A
Retailer 7
-
£441 GBP
ZAR 9,549 ZAR
View
A
Retailer 8
-
£450 GBP
$603 USD
View
A
Retailer 9
-
£452 GBP
View
A
Retailer 10
-
£625 GBP
A$1,288 AUD
View
A
Retailer 11
-
£654 GBP
$876 USD
View
A
Retailer 12
-
£826 GBP
$1,107 USD
View
B+
Retailer 13
-
£863 GBP
$1,156 USD
View
B+
Retailer 14
-
£1,034 GBP
View
B+
Retailer 15
-
£1,089 GBP
SGD 1,972 SGD
View
Retailer 16
-
£1,317 GBP
$1,765 USD
View
Price last confirmed 9 days ago
Most Expensive
B
Brilliant Earth
21421986A · Oct 29
£1,537 GBP
$2,060 USD
View
16 more retailers have this diamond
Prices start from £257 GBPSave up to £1,281 GBP

Carat Hunter is not affiliated with, endorsed by, or sponsored by any retailer listed. Retailer information is from publicly available sources and may not be current. Verify details directly with the retailer before purchasing. Return terms as we hold them. Check the retailer's own returns page before you buy.

A
1.46ct Cushion
£257 GBP